Python Launcher can not recognize pyw file as Python GUI Script file type correctly.

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2019-04-03.06:27:07.623>
labels = ['OS-mac', 'type-bug', '3.9']
title = 'Python Launcher can not recognize pyw file as Python GUI Script file type correctly.'
updated_at = <Date 2020-02-29.08:07:57.733>
user = 'https://github.com/gjj2828'

bugs.python.org fields:

activity = <Date 2020-02-29.08:07:57.733>
actor = 'ronaldoussoren'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['macOS']
creation = <Date 2019-04-03.06:27:07.623>
creator = 'gjj2828'
dependencies = []
files = []
hgrepos = []
issue_num = 36516
keywords = ['patch']
message_count = 4.0
messages = ['339380', '362912', '362932', '362967']
nosy_count = 4.0
nosy_names = ['ronaldoussoren', 'ned.deily', 'gjj2828', 'erlendaasland']
pr_nums = ['12672']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue36516'
versions = ['Python 3.9']